Combination-lock.



R. H. McDONOUGH.

COMBINATION LOCK.

APPLICATION FILED SEPT 1. 191?.

1,27 1 ,739. Y Patented July 9, 1918.

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attozmugs R. H. McDONOUGH COMBINATION LOCK.

APPLlCATlON FILED SEPT. 1. 1917.

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w E M W M R. H. M cDONOUGH, COMBINAHON LOCK.

APPLICATION FlLED SEPT. 1,-191 I- Paoented July 9, 1918.

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ROBERT H. MODVONOUGH, OF DETROIT, MICHIGAN.

COMBINATION-LOCK.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed September 1, 1917. Serial No. 189,276.

To all whom it may concern: I v

Be it known that I, ROBERT H. MoDoN- OUGH, a citizen of the United States of America, residing at Detroit, in the county of'VVa-yne and State of Michigan, have invented certain new and useful Improvements in Combination-Locks, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to combination locks for automobiles and its object is to provide a combination lock particularly adapted to be associated with a valve controlling the liquid fuel supply to the motor of the vehicle and with switches controlling the ignition and light circuit to lock said valve in closed position and said switches open, and thereby prevent starting of the motor of the vehicle by unauthorized persons.

In the drawings:

Figure 1 is a front view the combination lock;

Fig. 2 is a rear view of said casing;

Fig. 3 is a view similar to Fig. 2 but with the rear cover-plate removed so as to disclose the interior mechanism, the parts being shown in locked position; M

Fig. 4 is a view similar to Fig. 3 but show ing; the parts in unlocked position;

Fig. 5 is asectional view taken on line 5 5 of Fig. 13, the casing being shown; mounted upon the dash, and the controlled valve and switches shown; 7

Fig. 6 is a front view of the casing with the. dial removed and the, parts shown in locked position;

Fig; 7 is a view similar to Fig. 6 but showing the "parts in unlocked position;

Fig. 8 is a front view of the:dash with the casing removed,v showing a plate which covers certain mechanism carried by the dash, to w'hich plate the casingis adapted to be secured; i f i Q Fig. 9 is a view similar to Fig. 8 but with said plate'remov'ed so as to uncover the mechanism carried by the dash;

F 10 is a rear viewof the dial;

Fig. 11 is a perspective detail view of two of the casing of cams showing interchangeable faces thereof adapted to drive one from the other with lost faction.

In these views the reference character 1 designates the dash of a motor vehicle and 2 a valve in front of said dash controlling the flow of liquid fuel through a pipe3 and thence to the motor (not shown). The stem 4 of said valve projects rearwardly through the dash and into a recess 5 formed in the rear face thereof. Within said recess a looking pin 6 is passed transversely through the stem to restrain the same against forward displacement. Within said recess, at each side of the stem 4, there are also respectively located switches for controlling the light and ignition circuit, each of said switches comprising an actuating stem- 7 having a portion journaled in the dash, a contact arm 8 mounted upon the stem but insulated therefrom' and one or more fixed contact members 9 adapted to be engaged by the arm 8 in a certain rotative position of the stem 7. The ends of the stems 4 and 7 are transversely slotted as indicated at 10 to adapt them for engagement with other parts hereinafter described. To the rear of thedash there is attached a circular cover-plate 11 which overlies the recess 5 and through which the stems 7 slightly project, (see Fig. 8). At the center said plate is formed with an opening 12 to allow engagement with the' valve stem 4 of actuating means therefor carried'by the casing.

The casing 13 is of cylindrical form and is provided with an annular flange 14 adapted to bear upon the dash and to be attached thereto. Adjacent its front said casing is integrally formed with a transverse parti-' tion 15 producing front and back compartments 16 and .17 respectively, the latter of which is considerably'the larger. The'com partment 17 i'sclosed normally by a plate 18 secured by screws '19 to lugs 20 formed internally of the casing at opposite sides thereof. A sleeve comprising parts 21,22 and 23 is mounted centrally of the casing. The part 23 rotatively engages'in a central aperture in the jects slightly into the chamber 16. a The part 22, within the chamber 17 abuts against the partition'15,and'the part 2l','whijch 'is'of relatively smaller diameter, extends through Through" said sleeve there the eliamber'l'i.

partition 15 and pro upon one end ef is passed a screw 24 having its head bearing against the rear end of the sleeve and its front end threaded into a boss 25 formed centrally upon .the rear surface of a dial he .2 whieh ,eeh ut s a ele u e .z the chamber 16. Said dial has a beveled periphery with radial markings which, the operation of unlocking, are to be registered with a radial mark 27 on the casing in the usual manner. i

With n the eeiuneitme 16 a leels ng member 285s journled upon the sleeve part 23, said member being formed with lugs 29 and 30 which, as is well shown in Figs. 6 and 7, are adapted respectively to :have interlockingengag emerrtayiith disk-shapedcontrolling elements-31 andf32 ihavingtstems 33 journaled in the partition 15, and projecting through orificesiifl in ithccover-plate for engagementwiththestemsi Asshown, thecontrolling member .31 for the lights has threelocking positions lcorresponding' respectively vto open and closed positions of the switch controlling the light oircu'tand to a position in whiohithe :lights are dimmed, and-the men].- her "32 controlling the ignition circuit has two locking positions respectiyely COlIB. spending to the open and closed positions ,of the syviteh ,controllin the ig ition circuit. There is alsomounted ,the chamber 16 a disleshaped membe 5 fo a tuating th locking mem er, vthe am ih ng earn a ;pi;ntle ,36 which is jourllifil l l the paigtitioniw and in the plate 118, Each of the members 31, 532 and 35 Pe i p ripheral y throug a rre ponding sl t in th e e of th L a ing nd ha e haindile er knob 37 BXtQllQl to the casing to taeiili at m hinula en .Eaeh i s id {three membe is p pheraly w h w r such Q i ne Wh ier y ef th asing heheete h en l t r he leekie mem eref th ent ielled e reuit e e i m- Control is transmitted :tronn {the actuating m mhe @315 $9 th l li s' memb r 28 threug a leye 0 iee he ecl W hi h ehemher 7 p n th na-n22 of th sl e, eneeeete mt ye eeie le er he hg Slotted r ngag men wi h a pin :1 carri :by d e ua ihg mem e nd Pnei tieg thr ugh reuat e e ea i the pe i 'la and he other end of said lever carrying Within the chamber a post {i3 from which a reduced portion 4a projects gtl irough an areuate slot 43 in the partition 15 for engagement with i The post 43 forms a r etal un e t a pl ali y Of r l three being-employed in this instance. The free ends ogf said pawls are formed with aroua te recesses vhich are adapted in tone pee tieh ei the te th ie ine t l em r a pi e reee ng iehshe plat endha-eee ee f'u eth par it on en id we stress d W h th lee-lees pm so as to retain the 45, the lever 40 occupies the position disclosed in Fig. 3, being restrained by said pawls against displacement from said position, and the locking member 28 has engagement :with the controlling members 31 and 32 same in one of the positions disclosed in Figs. 6 and 7 Thus it is seen that the pin 453s adapted to form an abutment for the pawls whereby the various parts are held in locked position. In order thatthe paivls may automatically engage the locking pin 45 as soon as the lever 40 is displaced to the po itieh shown in ige ch of said pawls has attached thereto a spring 4C6, bearing at itsv free-end .uponaperipher-ai wallloif athecasing. For each pawl there is aicorrespondingicaln e7 mounted upon the sleevepant 21,each cam being formed with a peripheral pointed i QQth .l8' ior engagement with a similarly ishapedtooth upon the ,corresponding pawl "to lift the pawl from engagement 'With the looking fpin 45'. "The severalcams are iconnected to each otherby a lost-motion engagemen es ab ish d .by a y welllenowna e ne, a t r e ample, by f ming ginterengageazble segments upon adjacent cains; thus :the cams may be successively operated to disengage their ;corresponding paw-ls by a ,oseillatery iu tm o a mmen actua ng member, namely, t a 2 e de ining cam e th s es i t a .W h i nea st ediae nt th Par i :Seid cam being keyed to the dial by -;a pin 50 passing eccentrically throughthe sleeve part 22 and engaging in one of a series oi apertures 51 formed in the back {race ofthe Jdial; Accidental rotation of the cams is prevented by spanners 52 which respectively l engage y neh el hubs ter e on the am n h han anehore y engegem t w th ne of the stems 33. Adjacent the pivot ,post 4:3 there is also mounted upon the lever 40' a post 54 which acts as stop to prevent the nawl taces of the icorresponding v cams when disena ed teem th jl e hg P lh team A which is nearest adjacent the cover-plate 18 lgIlQtQllQCl ,to torrnashoulder 55 and a pin 59 carried by ,pintle 36 is adaptedto engage said shoul er when the actuating member 3 -5 is roeked to accomplish unlocking of the ,mechanisnr, Tlhe coyer-plate 18 ha cent ally .ienrn eh a sl v which sleeve rigidly carries an arm .58 withiii ijllflfillfllfibfi, 17,,n1e outer end of which arm pix totally engages the ,post i3, so as to cause said sleeve to undergo a slight rotation when the, lever 40 carrying said post is rocked. Said sleeyeQpnojects through the central opening 12 of the plate 11 .When the casing is mounted upon 'ithe dash and is adapted ,to cominnnic te its rotation tot-he stem giby the provision of a pin 59 mountedelee e lensesl s 1 he trans'velfiely n id slot 10 in thesaid stem 4. Theeggtremities of the pin 59 project at each side ofj the sleeve 57 and a formed in communication with the opening 12 to allow the pin 59 to be passed through the plate 11 and into the recess 5. Asthe parts-within the casing are shifted to looking position the sleeve 57 is so rotated'as to shift the pin 59 out of registration with the slots and it thus becomesimpossible to remove the casing fromithedash until'the dial has been manipulated according to a' known combination soas to permit "the mechanism to be shiftedto unlocking position. i

It is to be noted that the members 31 and 32 may be freely rocked to establish any clesired control of the-ignitionand lightcircuits when thelocking member 28 is shifted from engagement with said members. -It is also to be observed'that manipulation of the member 35 servesnot only'to'shi-ft the member 28 to 'or from its locking position, but also throws the liquid supply valve 2 open or closed according as said locking member 28 is in operative or inoperative'position. By the provision' of a' plurality of apertures 51 in the rear face of the"dial' it becomes possible for a user'of thelock to readily change the combinatiom this sometimes being desirableto' prevent use of a car by a person to whom the old combination is known. After having removed the casing from the dash and loosened the screw 24, the dial maybe taken off and the pin 50 may be engaged in a different one of the apertures 51. By causing the pin 56 to engage and slightly rotate one of thecams 47 while the'mechanism is being unlocked said cam is shifted from its pawl-raising position so that a proper manipulation of the dial will be necessary to again raisethe pawls after the partshave been readjusted to looking position.

lVhatI- claim a's'my invention is 1. The combination with a pivotal member, of an abutment, a plurality ofpawls engageable with said abutment in a certain position of the'pivotal member for locking said member in said position, a plurality of cams respectively associated with said pawls, each being adapted to lift its corresponding pawl out of engagement 'with said abutment,

lost-motion connections'between 'said'cams and means for adjusting said cams rota tively according to a predetermined combination to disengage all 'of the pawls from said abutment; 1 j

2. The combination with a pivotal meme be1',"of an abutment, a plurality of pawls engageable' with said abutment in a certain position of the pivotal member-for locking said member in said positionya plurality of cams respectively associatedwith said pawls, each being adapted to lift itscorrespondingpawlout of engagement with said abutment, I lost-motionconnections between sald cams,

pair-of opposed slots 60 are' said pawls in a certain meansfor adjusting said cams rotatively according'to apredetermined combination to disengage all of the-pawls from said abutment, and a stop engageable by said pawls When the latter are disengaged from said abutment, limiting'motionof the pawls toward the corresponding cams;

3. The combination with a locking member and means for actuating the same, of an abutment and a series of paw-ls respectivelyengageable With"said abutment to prevent retraction of the locking member, a series of concealed cams for respectively actuating said pawls to release.-.tl1e locking member, lost-motion connecting means between said cams by which they may be successively aetuated=according to a predeterminedcombination to disengage all of said pawls from the abutment, and astop engageable by said pawls when the latter are disengaged from said abutment, limiting motion of the pawls toward the correspondingcams.

4. The combination with a pivotal member, of an abutment, a pluralityof pawls en-= gageable' with said abutment in a certain position of the pivotal member for locking said member inv said :position, a plurality of cams respectively associated with said pawls, each being adapted to lift its corre sponding pawl out of engagement with said abutment, lost-motion connections between said cams, means for adjusting said cams rotatively according to a predetermined combinationto disengage all of the pawls from said abutment, and means for automatically throwing the combination upon displacement of said pivotal member from its locking position. 1 I

Thecombination with a locking member, ofan actuating membertherefor and an intermediately pivoted lever transmitting control from the actuating member to the locking member, an abutment and aplurality of pawls engageable with-said abutment in the position of the lever corresponding to the locking position of thelocking member to; restraini said lever=andlocking member from displacement,'a pluralityof cams connected by a lost-motion engagement-and respectively associated with said ,pawls to individually disengage? the same from ,said abutment and means for adjusting sa-id cams rotatively according tea-predetermined combination to disengage all-of the pawls from said abutment. I 6. vThe combination with "a v:pivotal member, of a said member, an abutment engageableby position of; the piv otal member for lockingsaidmember i 11' said position, a plura-lityf'ofcams; respecti vel v associated With said. -pa.wls,:. each being adapted to lift its; corresponding pawl but of w 'engagement 5 with said, abutment, lostplurality .of' pawls mounted upon motion connections between said cams, and means for adjusting said'cams rotatively ace cording'to a predetermined combination to disengage all of the pawls from said abutment. v I -7 The combination: with a pivotal vmember, of a plurality, of pawls mounted upon said member, an abutment engageable by said pawls in a certain position of the,piv-' otal member for locking saidmember in said position, a plurality of cams respectively, associated with said: pawls, each being adapted to lift its corresponding lpawl out of engagement with said abutment, lost: motion connectionsbetween said cams and means for adjusting said cams rotatively according to a predetermined combination to disengage all of the pawls from said abutment, and a stop jcarriedby said 'pivw otal member engageable-by said pawls when the latter are disengaged from saidabutment, limiting motion of the pawls toward the corresponding cams. 8; The combination with a pivotal member, of a plurality of pawls mounted. upon said member, an abutment engageable ,by said pawls in a certain position of the pivotal member for locking said member in said position, a plurality of cams respectively associated with said pawls, each being adapted to lift its corresponding; pawl out of engagement with said abutment, lost-motion connections between said cams, means for adjusting said cams rotativelyaccording to a predetermined combination to disengage allof the pawls from said abutment, and means for automatically throwing the combination upon displacement of .said pivotal member from its locking position. E

9. The combination with a lockingmember, of an actuating member therefor, an in termediately pivoted lever transmitting control from the actuating member to the locking member, a plurality of pawls pivoted upon said lever, an abutment engageable by said pawlsin the position of the lever corresponding tothe locking position of the looking member to' restrainsaidlever and look ing member from displacement, a plurality of cams connected by alost-motion engagement and respectively associated 'with said pawls to individuallyedisengage the same from said abutment, and means for adjust ing'said cams rotatively according to a pre determined"combination to disengage all of the pawls from said abutment. '10. The combination with a pivotal memb'er, of a plurality of pawls and an abutment engageable' by said pawls in acertain position of the' pivotal member to lock said mem= ber' in said position, a plurality of cams mounted coaxially withthe pivoted member and respectively associated with said: paw-ls, each'beingadapted to lift its corresponding pawl out of engagement withsaid abutment,

I ment, a second a mounted upon a support,

means for adjusting said cams rotatively according to a predetermined combination to disengage all ofthe pawls from said abutpivotalmember mounted coaxially with said first-named pivotalmemher, an arm rigidly projecting from the second pivotal member, and means pivotally engaging the outer portions of said arm and the first-named'pivotal member whereby the two said-pivotal members are actuable in common. 1 1 a V 1 11. The combination with a casing having a partition therein, ofsa rotative member journaled insaid partition, a lever journaled upon saidmember atone side of the parti: tion, a plurality of pawls mounted upon said lever,1an abutmentengageable by said pawls in one position of the lever to lock the lever in said position, a plurality of cams mounted upon said rotative member and respectively associated with said pawls, each being adapted to lift its corresponding pawl out of T engagement withv said abutment, lostmotion connections a between, said cams, "a locking member at the other side of said partition having an engagement with said lever to restrain it from displacement. when the a lever is locked by sa'idpawls, and an actuating member for the cams overlying said locking member. a 1 V 12. The a combination withcontrolled mechanism mounted upon a support-, of a plate secured to said supportand overlying said. mechanism, control means for said mechanism, a casing carrying said control means, a member carried by the casing en-v gageable with said plate to retain the casing upon the; plate, and a common means .-for locking the last-named member against disengagement from the plate and for locking the'control member in a fixed position. 13. The combination with I controlled mechanism mounted upon a support, of a valve stem adjacent said mechanism, a plate secured to said support'and overlying said 110 mechanism'and valve stem, control means for said mechanism a casing carrying said control means, a member carried by the easingengageable with said plate to retain the casing upon-the plate andf-detachably en- 115 gageable with-said valve stem for actuating the same, and-means carried-by the casing for locking the last-named member to pre vent actuation of the valve stem and hold the V casing in'engagementwithfsaid plate. and

for locking said control means against factuation. Y .Y r i y 14:. The combination swit-h I mechanism of a control stem for'said mechanismdetachably engageable therewith, acasing carrying said control stem and vdetachjably'engageable with said support, means for lockingsaid f control stem carried by Zthe casing, and actuating members within the casing for said stem. andv said 13 0 locking means respectively, said members abutment engageable by said pawl in a cerprojecting exteriorly of the casing and eartain position ofthe pivotal member to lock rying indicia adapted to be exposed upon the lever in said position, said pawl having the projecting portions of said members. a bearing upon said abutment during move- 5 15. The combination With a pivotal memment of the pivotal member.

ber, of actuating means therefor, a pawl In testimony whereof I affix my signature.

mounted upon said pivotal member and an ROBERT H. MODONOUGH.

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